CN108238701A - The coupling technique of light electrolysis-Pressed bio filtration treatment industrial wastewater biochemical tail water - Google Patents
The coupling technique of light electrolysis-Pressed bio filtration treatment industrial wastewater biochemical tail water Download PDFInfo
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- CN108238701A CN108238701A CN201810073147.1A CN201810073147A CN108238701A CN 108238701 A CN108238701 A CN 108238701A CN 201810073147 A CN201810073147 A CN 201810073147A CN 108238701 A CN108238701 A CN 108238701A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Abstract
The invention discloses a kind of coupling techniques of light electrolysis Pressed bio filtration treatment industrial wastewater biochemical tail water.The technique includes the following steps：(1) micro-electrolysis reactor pre-processes：The pH of industrial wastewater biochemical tail water is adjusted to be sent into after 3.5~5.5 in the micro-electrolysis reactor for being filled with micro-electrolysis stuffing and is pre-processed；(2) Pressed bio filtration treatment：Using pressurization organism filter to being handled in step (1) through the pretreated water outlet of micro-electrolysis reactor；Wherein, microorganism magnetic fillers are filled out in pressurization organism filter.By improving ingredient, structure and the shape of micro-electrolysis stuffing in the present invention, strengthen the removal effect of pollutant to the synergistic effect of the activation of microorganism, light electrolysis and pressurization organism filter using the degradation of light electrolysis, Pressed bio iron and magnetic field.The present invention has many advantages, such as that floor space is few, operating cost is low, effluent quality is good, sludge quantity is few, suitable for the advanced treating of various industrial wastewater biochemical tail waters.
Description
Technical field
The invention belongs to field of industrial waste water treatment, more particularly to a kind of light electrolysis-Pressed bio filtration treatment Industry Waste
The coupling technique of water biochemical tail water.
Background technology
With the acceleration of China's process of industrialization, the industrial wastewater tail water generated therewith causes water environment larger pressure,
Although these biochemical tail waters have been subjected to materialization and secondary biochemical treatment, a large amount of pollutant is eliminated, since it is still remaining big
Recalcitrant chemicals are measured, secondary biochemical effluent is caused to be unable to stably reaching standard.At the same time, the demand that river basin water quality improves
More strict requirements are proposed to the draining of waste water treatment plant.Therefore, the stably reaching standard discharge of industrial effluent treatment plant is realized,
Not only have important practical significance, but also region control source emission reduction for a large amount of industrial effluent treatment plants and related industries garden
Construction and operational mode have important guiding effect.For the depth of the industrial wastewater biochemical tail water containing Recalcitrant chemicals
Processing, method common at present have：Ozone oxidation, hydrogen peroxide oxidation, resin adsorption, activated carbon adsorption, membrane filtration, ultraviolet photograph
It penetrates, Fenton oxidation, MBR (membrane bioreactor), iron-carbon micro-electrolysis etc..Through retrieval, it there are no and added using light electrolysis-biology
Press filtration coupling technique carries out industrial wastewater biochemical tail water the relevant report of processing up to standard.
In the treatment technology of indegradable industrial effluent, micro electrolysis tech is just paid more and more attention, and in engineering reality
In.The microelectrolysis processing principle of waste water is exactly using foring countless subtle originals between iron-carbon particle there is potential difference
Battery, these subtle batteries are to become cathode with the low iron of current potential, and the high carbon of current potential does anode, containing acidic electrolyte bath
In aqueous solution occur redox electrochemical reaction, reaction the result is that iron by corrosion become divalent iron ion enter it is molten
Liquid.By the water outlet pH value adjusting of micro-electrolysis reactor to 9 or so, the ferric hydroxide colloid with coagulation can be formd, it
There is a natural attraction between the sexes with the particle with faint negative electrical charge in pollutant, forms more stable flocculate (being also iron cement) and removes.It carries
High potential difference can enhance redox, therefore at present in terms of micro-electrolysis stuffing development, mainly be filled out from improvement light electrolysis
The hardened problem and raising reaction efficiency of material are target.
Weak electrolysis mechanism has hard-degraded substance unique degradation effect, can improve the biodegradability of waste water.Light electrolysis
As further treatment technique mainly after secondary biochemical treatment, the substance of biodegradability has substantially dropped completely in waste water
Solution, remaining is hard-degraded substance, using the mechanism of light electrolysis, further improves the removal effect of organic pollution.
The characteristics of pressurized biological oxidation technique be air or pure oxygen are dissolved in pressurized tank under impressed pressure formed it is highly concentrated
Spend the molten carbonated drink of dissolved oxygen, molten carbonated drink abrupt release enters in the purifier that activated carbon is filler, the strong absorption of activated carbon and
The synergistic effect of the biodegradable pollutant of its surface biological film, the adsorption process and biodegradation process for making activated carbon are in
A kind of dynamic equilibrium so as to extend the service life of activated carbon, and makes the water outlet after two stage treatment obtain deep purifying.
The prior art is in the presence of that COD is exceeded often for biochemical tail water of the industrial wastewater after conventional process,
Patent No. CN201110294649.5 " Fe-C micro electrolysis-dynamic membrane wastewater deep treatment process ", it is proposed that micro- using iron charcoal
Electrolysis pre-processes Industry Waste water pollutant, removes some of the contaminants and improves the biodegradability of waste water；Later, it is dirty
Dye object is mainly removed by mixed liquor microbial degradation in hydrolysis acidification pool and aerobic Dynamic Membrane reaction tank, and CODcr is discharged after processing
It is down to below 50mg/l.But the shortcomings that technique, is 1. to need to use the activated sludge added with diatomite in powder or zeolite powder
Mixed liquor forms precoated dynamic membrane in stainless (steel) wire, nylon wire or nonwoven surface, and operation is more complicated；2. it is deposited in operational process
Cause effluent quality unstable mud cake coating is uneven, coating is easy to fall off；3. it will be generated in coating regenerative process
More sludge.Therefore, develop it is a set of take up an area it is stable, sludge quantity is few, ground area is small, operating cost is low, it is simple and practicable,
Efficiently the further treatment technique of removal water pollutant has important social reality meaning.
Invention content
The shortcomings that it is an object of the invention to overcome the prior art and deficiency provide a kind of light electrolysis-Pressed bio filtering
Handle the coupling technique of industrial wastewater biochemical tail water.It can be applied to industrial effluent treatment plant or industrial park sewage treatment plant
Upgrading.
The purpose of the present invention is achieved through the following technical solutions：A kind of light electrolysis-Pressed bio filtration treatment industrial wastewater
The coupling technique of biochemical tail water, includes the following steps：
(1) micro-electrolysis reactor pre-processes：Filling is sent into after the pH of industrial wastewater biochemical tail water is adjusted to 3.5~5.5
Have in the micro-electrolysis reactor of micro-electrolysis stuffing and pre-processed；Wherein, control micro-electrolysis reactor in dissolved oxygen it is a concentration of
1.5~2.5mg/L, the time of hydraulic retention is 1~2 hour；
(2) Pressed bio filtration treatment：Using pressurization organism filter to locating in advance through micro-electrolysis reactor in step (1)
Water outlet after reason is handled；Wherein, microorganism magnetic fillers, pack completeness 50~65%, pressure are filled out in pressurization organism filter
0.2MPa, gas-water ratio are (2~4):1, hydraulic detention time is 1.5~3 hours.
Industrial wastewater biochemical tail water described in step (1) is water outlet of the industrial wastewater after biochemical treatment.
Micro-electrolysis stuffing described in step (1) includes iron powder, activated carbon, chalcopyrite, flyash, bentonite, Hai Pao
Stone, pore creating material and bonding agent；Preferably include the following component counted in parts by weight：Iron powder 35~45, activated carbon 10~25,
Chalcopyrite 7~15, flyash 5~10, bentonite 8~13, sepiolite 6~12, pore creating material 3~8 and bonding agent 4~14；It is more excellent
It is selected as obtaining by the following method：
(I) prepare raw material by following weight ratio：Iron powder 35~45, activated carbon 10~25, chalcopyrite 7~15, flyash
5~10, bentonite 8~13, sepiolite 6~12, pore creating material 3~8 and bonding agent 4~14；
(II) raw material in step (I) are granulated into the particle of a diameter of 4~6cm after mixing, it is dry, then
Completely cut off air roasting 1~2 hour at 1000 DEG C, natural cooling obtains micro-electrolysis stuffing.
The particle is preferably the particle of irregular shape.
The pore creating material is preferably one or more of carbon dust, saw dust, polyvinyl alcohol and sodium carboxymethylcellulose.
The binding agent is preferably starch.
The coupling technique of the light electrolysis-Pressed bio filtration treatment industrial wastewater biochemical tail water, step (1) it
After further include following steps：PH value through the pretreated water outlet of micro-electrolysis reactor is adjusted to 7.8~8.8, after precipitation
Water outlet enters back into pressurization organism filter and is handled.
Pressurization organism filter described in step (2) is the Pressed bio in Chinese patent ZL 200610132381.4
Filter.
Micro-electrolysis stuffing described in step (2) includes hollow plastic ball；The hollow plastic ball is included outside hollow plastics
Shell；Spherical permanent magnet and natural pumice and/or zeolite granular are filled with inside the hollow plastic ball；The hollow plastics
Shell is equipped with surface trepanning.
The aperture of the surface trepanning is more than the diameter of spherical permanent magnet, and more than natural pumice and/or boiling
The particle size of stone particle.
The hollow plastic shell is divided into two hemisphere up and down, and junction button 3 is equipped between episphere and lower semisphere.
Microorganism magnetic fillers described in step (2) include hollow plastic ball, permanent magnet and float stone (or zeolite)；
Preferably by baton round shell, a diameter of 6mm spherical permanent magnet and grain size of the surface opening diameter for 35mm~80mm
Float stone (or zeolite) particle for 3mm~5mm is formed；Or by baton round shell that surface opening diameter is 35mm~80mm, straight
The zeolite granular that the pumice granules and grain size that diameter is the spherical permanent magnets of 6mm, grain size is 3mm~5mm are 3~5mm is formed,
In, the volume ratio of pumice granules and zeolite granular is 1:1.
The hollow plastic ball is hollow polystyrene baton round, hollow polyvinyl plastic ball and hollow polypropylene plastics
It is one or more of in pellet.
The volume ratio of the permanent magnet and float stone (or zeolite) is preferably 3~5：95~97.
The float stone is preferably natural pumice.
The magnetic induction intensity of microorganism magnetic fillers described in step (2) is 200~450Gs.
The coupling technique of the light electrolysis-Pressed bio filtration treatment industrial wastewater biochemical tail water, step (2) into
The step of further including microbial acclimation (startup of Biology-iron pressurization organism filter) before row Pressed bio filtration treatment, tool
Body is：
The seed sludge of sewage plant will be derived from, bored exposure 24 hours is carried out, stands, abandon supernatant, then add in step (1)
Through the pretreated water outlet domestication of micro-electrolysis reactor 7 days, add iron sludge acclimatization 10~15 days, form reunion shape biology
Continuous domestication 20~25 days in pressurization organism filter are added it to after iron sludge again.
The iron sludge is the precipitating sludge from micro-electrolysis reactor, and additive amount is mixed to be accounted for by iron sludge concentration
Close liquid suspended sediment concentration (MLSS) 5~10% calculate.
The present invention is had the following advantages relative to the prior art and effect：
(1) present invention for industrial wastewater in the prior art by common process treated biochemical tail water COD and coloration
It is higher, often there is the phenomenon that exceeded, cross filtration coupling technique using light electrolysis-Pressed bio carries out depth to these biochemical tail waters
Processing, using the degradation of light electrolysis, Pressed bio iron and magnetic field to the activation of microorganism, light electrolysis and pressurization life
The synergistic effect of object filter strengthens the removal effect of pollutant.Have developed that a set of good operation stability, sludge quantity are small, account for
Ground area is few, operating cost is low, installation is simple, is capable of the further treatment technique of easy to operate, efficient removal water pollutant,
Can processing up to standard effectively be carried out to below standard biochemical tail water, suitable for the advanced treating of various biochemical tail waters.
(2) present invention is by improving micro-electrolysis stuffing ingredient, structure and shape, develops strong anti-of redox
Hardened micro-electrolysis stuffing.
(3) the iron sludge that the present invention generates light electrolysis is used to tame the microorganism in pressurization organism filter, reaches and changes
The purpose of kind microbial activity, pollutant is effectively removed using Pressed bio iron processes.
(4) with existing light electrolysis-bioanalysis group technology (light electrolysis-biofilm-electrode process, light electrolysis-BAF techniques)
Compare, the pressurization organism filter as a result of novel micro-electrolysis stuffing, containing Biology-iron and microorganism magnetic fillers, this
Invention has that processed in units water floor space is few, the better outstanding feature of clean-up effect.In the industry containing hardly degraded organic substance
Wastewater biochemical tail water process field up to standard has big market application foreground.
(5) micro-electrolysis stuffing containing specific components can effectively remove Industry Waste water part pollutant in the present invention
And the biodegradability of water outlet is improved, help to improve the organic pollutant removal rate of subsequent biochemical processing；Meanwhile life of pressurizeing
Precipitating sludge (iron sludge) in the activated sludge of object filter containing micro-electrolysis reactor；Utilize the effect of Biology-iron, Ke Yiti
High organic pollutant removal rate；In addition, organic dirt can be improved containing microorganism magnetic fillers in pressurization organism filter
Object removal rate is contaminated, while there is the notable feature of sludge in-situ minimizing；
(6) light electrolysis, Biology-iron, magnetic field, pressure, microbial degradation are organically coupled by this method, to industry
Wastewater biochemical tail water is handled, and has the remarkable advantage that effluent quality is good, surplus sludge volume is few.
Description of the drawings
Fig. 1 is the coupling technique flow chart of light electrolysis of the present invention-Pressed bio filtration treatment industrial wastewater biochemical tail water.
Fig. 2 is the structure chart of microorganism magnetic fillers of the present invention；Wherein, figure b is the A-A sectional views for scheming a；1 is hollow plastic
Expect shell；2 be surface trepanning；3 be junction button；4 be natural pumice and/or zeolite granular；5 be permanent magnet.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but the implementation of the present invention is not limited to this.
1st, the novel micro-electrolysis stuffing involved in the present invention is made of following component by weight：Iron powder 35~45,
Activated carbon 10~25, chalcopyrite 7~15, flyash 5~10, bentonite 8~13, sepiolite 6~12, pore creating material 3~8 and viscous
Connect agent 4~14.More than raw material are industrial pure material, are uniformly granulated into not advising for 4~6cm diameters after mixing in proportion
Then shaped particles, it is dry, air roasting 1~2 hour is then completely cut off at 1000 DEG C, novel micro- electricity is obtained after natural cooling
Solve filler.
2nd, the structure of the microorganism magnetic fillers involved in the present invention is as shown in Fig. 2, the microorganism magnetic fillers include
Hollow plastic ball；The hollow plastic ball includes hollow plastic shell 1；It is filled with inside the hollow plastic ball spherical permanent
Magnet 5 and natural pumice and/or zeolite granular 4；The hollow plastic shell 1 is equipped with surface trepanning 2；The surface trepanning
2 aperture is more than the diameter of spherical permanent magnet 5, and more than the particle size of natural pumice and/or zeolite granular 4；Institute
State hollow plastic shell 1 can be divided into up and down two hemisphere, between episphere and lower semisphere be equipped with junction button 3, be used to open and
Hollow plastic ball is closed, be conveniently put into or object (permanent magnet, natural pumice or zeolite granular) is filled out in taking out.Institute in embodiment
The microorganism magnetic fillers of use are spherical forever by a diameter of 35mm~80mm hollow plastic balls, a diameter of 6mm of surface trepanning
Long magnet and grain size are formed for 3mm~5mm natural pumices (or zeolite) particle；Wherein, the making material of hollow plastic ball
Can be polystyrene, polyethylene, polypropylene etc., the volume ratio of permanent magnet and natural pumice (or zeolite) is 3~5：95~
97.The magnetic induction intensity of the microorganism magnetic fillers is 200~450Gs.
3rd, the pore creating material involved in the present invention can be carbon dust, saw dust, polyvinyl alcohol or sodium carboxymethylcellulose；It is viscous
It can be starch to tie agent.
Embodiment 1：Light electrolysis-Pressed bio crosses filtration coupling technique advanced treatment of dyeing wastewater biochemical tail water.Using certain work
Industry garden biochemical tail water is as follows as process object：
(1) micro-electrolysis reactor pre-processes：
It is sent into after the pH of dyeing waste water biochemical tail water (being taken from Zhongshan City, Guangdong Province dyeing and printing sewage factory) is adjusted to 3.5
Be filled in the micro-electrolysis reactor of novel micro-electrolysis stuffing, control reactor in dissolved oxygen concentration be 1.5~2.5mg/L, water
The power residence time is 1 hour.Water outlet carries out pH and adjusts to 7.8, after precipitation water outlet enter subsequent pressurization organism filter and carry out
Processing；Wherein,
Novel micro-electrolysis stuffing is made of the following component counted in parts by weight：Iron powder 45, activated carbon 10, chalcopyrite 7,
Flyash 5, bentonite 8, sepiolite 12, pore creating material 7 and bonding agent 6.More than raw material are industrial pure material, in proportion
The irregularly shaped particles of 4~6cm diameters are uniformly granulated into after mixing, it is dry, then completely cut off air roasting at 1000 DEG C
1.5 hours, novel micro-electrolysis stuffing is obtained after natural cooling.
(2) pressurization organism filter is handled：
Using pressurization organism filter (patent of invention ZL 200610132381.4 " pressurization organism filter ") to warp
The pretreated water outlet of micro-electrolysis reactor is handled, and is inside filled with microorganism magnetic fillers, pack completeness 50%, pressure
0.2MPa, gas-water ratio 2:1, hydraulic detention time is 1.5 hours；Wherein：Microorganism magnetic fillers by surface trepanning diameter
It is 3~5mm natural pumice particles for 35mm baton round polystyrene shells and the spherical permanent magnets of a diameter of 6mm and grain size
It forms, the volume ratio of the permanent magnet and natural pumice is 3：97, the magnetic induction intensity on filler surface is 200Gs.Its technique opens
It is dynamic to include the following steps with operation：
1. the startup of Biology-iron pressurization organism filter
Microbial acclimation：The seed sludge of Zhongshan City, Guangdong Province industrial park sewage plant will be derived from, it is small to carry out bored exposure 24
When, after sufficient standing, supernatant is outwelled, adds in the biochemical tail water pre-processed through micro-electrolysis reactor, and is gradually increased biochemical tail
Water, after taming 7 days, the iron sludge added in from micro-electrolysis reactor (it is dense to account for mixed liquor suspended solid, MLSS by iron sludge concentration
It is 5% to spend (MLSS)), then tame 10 days, it is then added to Pressed bio mistake after forming the larger reunion shape Biology-iron sludge of particle
In filter, carry out continous way and tame 20 days, system start completion.
2. normal operation
After the completion of microbial acclimation in Pressed bio reactor, micro-electrolysis reactor water outlet is continuously pumped into pressurization life
Object filter is handled.Water quality is shown in Table 1 after raw water and processing.
1 biochemical tail water of table water quality before and after the processing
Embodiment 2：Light electrolysis-Pressed bio crosses filtration coupling technique advanced treating industrial park biochemical tail water.Using certain work
Industry garden biochemical tail water is as follows as process object：
(1) micro-electrolysis reactor pre-processes：
After the pH of industrial park biochemical tail water (being taken from Zhongshan City, Guangdong Province industrial park sewage plant) is adjusted to 5.5
Feeding be filled in the micro-electrolysis reactor of novel micro-electrolysis stuffing, control reactor in dissolved oxygen concentration be 2.5mg/L, water
The power residence time is 2 hours.Water outlet carries out pH and adjusts to 8.8, after precipitation water outlet enter subsequent pressurization organism filter and carry out
Processing；Wherein：
Novel micro-electrolysis stuffing is made of the following component counted in parts by weight：Iron powder 35, activated carbon 25, chalcopyrite 10,
Flyash 8, bentonite 9, sepiolite 6, pore creating material 3 and bonding agent 4.More than raw material are industrial pure material, in proportion
The irregularly shaped particles of 4~6cm diameters are granulated into after even mixing, it is dry, it is small that air roasting 1 is then completely cut off at 1000 DEG C
When, novel micro-electrolysis stuffing is obtained after natural cooling.
(2) pressurization organism filter is handled：
Using pressurization organism filter (patent of invention ZL 200610132381.4 " pressurization organism filter ") to warp
The pretreated water outlet of micro-electrolysis reactor is handled, and is inside filled with microorganism magnetic fillers, pack completeness 65%, pressure
0.2MPa, gas-water ratio 4:1, hydraulic detention time is 2 hours；Wherein：Microorganism magnetic fillers are a diameter of by surface trepanning
50mm baton round polystyrene shells and the spherical permanent magnets of a diameter of 6mm and grain size are 3~5mm natural zeolite particle structures
Into；The volume ratio of the permanent magnet and natural pumice is 5:95, the magnetic induction intensity at filler center is 350Gs.Its technique starts
Include the following steps with operation：
1. the startup of Biology-iron pressurization organism filter
Microbial acclimation：The seed sludge of Zhongshan City, Guangdong Province industrial park sewage plant will be derived from, it is small to carry out bored exposure 24
When, after sufficient standing, supernatant is outwelled, adds in the biochemical tail water pre-processed through micro-electrolysis reactor, and is gradually increased biochemical tail
Water, after taming 7 days, the iron sludge added in from micro-electrolysis reactor (it is dense to account for mixed liquor suspended solid, MLSS by iron sludge concentration
Spend the 10% of (MLSS)), then tame 15 days, it is then added to Pressed bio after forming the larger reunion shape Biology-iron sludge of particle
In filter, carry out continous way and tame 25 days, system start completion.
2. normal operation
After the completion of microbial acclimation in Pressed bio reactor, micro-electrolysis reactor water outlet is continuously pumped into pressurization life
Object filter is handled.Water quality is shown in Table 2 after raw water and processing.
2 biochemical tail water of table water quality before and after the processing
Embodiment 3：Light electrolysis-Pressed bio crosses filtration coupling technique advanced treating industrial park biochemical tail water.Using certain work
Industry garden biochemical tail water is as follows as process object：
(1) micro-electrolysis reactor pre-processes：
After the pH of industrial park biochemical tail water (being taken from Zhongshan City, Guangdong Province industrial park sewage plant) is adjusted to 4.0
Feeding is filled in the micro-electrolysis reactor of novel micro-electrolysis stuffing, and it is 1.5~2.5mg/ to control dissolved oxygen concentration in reactor
L, hydraulic detention time are 1.5 hours.Water outlet carries out pH and adjusts to 8.3, after precipitation water outlet enter subsequent Pressed bio and filter
Device is handled；Wherein：
Novel micro-electrolysis stuffing is made of the following component counted in parts by weight：Iron powder 38, activated carbon 15, chalcopyrite 11,
Flyash 9, bentonite 8, sepiolite 7, pore creating material 5 and bonding agent 7.More than raw material are industrial pure material, in proportion
The irregularly shaped particles of 4~6cm diameters are granulated into after even mixing, it is dry, it is small that air roasting 2 is then completely cut off at 1000 DEG C
When, novel micro-electrolysis stuffing is obtained after natural cooling.
(2) pressurization organism filter is handled：
Using pressurization organism filter (patent of invention ZL 200610132381.4 " pressurization organism filter ") to warp
The pretreated water outlet of micro-electrolysis reactor is handled, and is inside filled with microorganism magnetic fillers, pack completeness 55%, pressure
0.2MPa, gas-water ratio 3:1, hydraulic detention time is 2.5 hours；Wherein：Microorganism magnetic fillers by surface trepanning diameter
80mm baton round polystyrene shell, the spherical permanent magnets of a diameter of 6mm and grain size be 3~5mm natural pumice and
(the two volume ratio is 1 to zeolite granular:1) it forms, the volume ratio of the permanent magnet and mixing ore particle is 4：96, the magnetic strength of filler
It is 450Gs to answer intensity.The startup of its technique includes the following steps with operation：
1. the startup of Biology-iron pressurization organism filter
Microbial acclimation：The seed sludge of Zhongshan City, Guangdong Province industrial park sewage plant will be derived from, it is small to carry out bored exposure 24
When, after sufficient standing, supernatant is outwelled, adds in the biochemical tail water pre-processed through micro-electrolysis reactor, and is gradually increased biochemical tail
Water, after taming 7 days, the iron sludge added in from micro-electrolysis reactor (it is dense to account for mixed liquor suspended solid, MLSS by iron sludge concentration
It is 8% to spend (MLSS)), then tame 13 days, it is then added to Pressed bio mistake after forming the larger reunion shape Biology-iron sludge of particle
In filter, carry out continous way and tame 22 days, system start completion.
2. normal operation
After the completion of microbial acclimation in Pressed bio reactor, micro-electrolysis reactor water outlet is continuously pumped into pressurization life
Object filter is handled.Water quality is shown in Table 3 after raw water and processing.
3 biochemical tail water of table water quality before and after the processing
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, letter
Change, should be equivalent substitute mode, be included within protection scope of the present invention.
Claims (10)
1. the coupling technique of a kind of light electrolysis-Pressed bio filtration treatment industrial wastewater biochemical tail water, which is characterized in that including such as
Lower step：
(1) micro-electrolysis reactor pre-processes：Feeding is filled with micro- after the pH of industrial wastewater biochemical tail water is adjusted to 3.5~5.5
It is pre-processed in the micro-electrolysis reactor of electrolysis filler；Wherein, control micro-electrolysis reactor in dissolved oxygen a concentration of 1.5~
2.5mg/L, the time of hydraulic retention is 1~2 hour；
(2) Pressed bio filtration treatment：Using pressurization organism filter to pretreated through micro-electrolysis reactor in step (1)
Water outlet is handled；Wherein, microorganism magnetic fillers are filled out in pressurization organism filter, pack completeness 50~65%, pressure 0.2MPa,
Gas-water ratio is (2~4):1, hydraulic detention time is 1.5~3 hours.
2. the coupling technique of light electrolysis according to claim 1-Pressed bio filtration treatment industrial wastewater biochemical tail water,
It is characterized in that：
Micro-electrolysis stuffing described in step (1) includes iron powder, activated carbon, chalcopyrite, flyash, bentonite, sepiolite, pore-creating
Agent and bonding agent；
Microorganism magnetic fillers described in step (2) include hollow plastic ball, permanent magnet and float stone.
3. the coupling technique of light electrolysis according to claim 2-Pressed bio filtration treatment industrial wastewater biochemical tail water,
It is characterized in that：
The pore creating material is one or more of carbon dust, saw dust, polyvinyl alcohol and sodium carboxymethylcellulose；
The bonding agent is starch.
4. the coupling technique of light electrolysis according to claim 2-Pressed bio filtration treatment industrial wastewater biochemical tail water,
It is characterized in that：
Micro-electrolysis stuffing described in step (1) includes the following component counted in parts by weight：Iron powder 35~45, activated carbon 10~
25th, chalcopyrite 7~15, flyash 5~10, bentonite 8~13, sepiolite 6~12, pore creating material 3~8 and bonding agent 4~14.
5. the coupling technique of light electrolysis according to claim 1-Pressed bio filtration treatment industrial wastewater biochemical tail water,
It is characterized in that, the micro-electrolysis stuffing described in step (1) obtains by the following method：
(I) prepare raw material by following weight ratio：Iron powder 35~45, activated carbon 10~25, chalcopyrite 7~15, flyash 5~
10th, bentonite 8~13, sepiolite 6~12, pore creating material 3~8 and bonding agent 4~14；
(II) raw material in step (I) are granulated into the particle of a diameter of 4~6cm after mixing, it is dry, then 1000
Completely cut off air roasting 1~2 hour at DEG C, natural cooling obtains micro-electrolysis stuffing.
6. the coupling technique of light electrolysis according to claim 1-Pressed bio filtration treatment industrial wastewater biochemical tail water,
It is characterized in that：
Microorganism magnetic fillers described in step (2) are by hollow plastic ball, diameter of the surface opening diameter for 35mm~80mm
For the spherical permanent magnets of 6mm and grain size be 3mm~5mm float stone or zeolite granular form.
7. the coupling technique of light electrolysis according to claim 6-Pressed bio filtration treatment industrial wastewater biochemical tail water,
It is characterized in that：
The hollow plastic ball is in hollow polystyrene baton round, hollow polyvinyl plastic ball and hollow polypropylene plastics pellet
It is one or more of；
The permanent magnet and the volume ratio of float stone are 3~5：95~97.
8. the coupling technique of light electrolysis according to claim 1-Pressed bio filtration treatment industrial wastewater biochemical tail water,
It is characterized in that：
The magnetic induction intensity of microorganism magnetic fillers described in step (2) is 200~450Gs.
9. the coupling technique of light electrolysis according to claim 1-Pressed bio filtration treatment industrial wastewater biochemical tail water,
It is characterized in that, following steps is further included after step (1)：It will be adjusted through the pH value of the pretreated water outlet of micro-electrolysis reactor
To 7.8~8.8, the water outlet after precipitation enters back into pressurization organism filter.
10. the coupling technique of light electrolysis according to claim 1-Pressed bio filtration treatment industrial wastewater biochemical tail water,
It is characterized in that, the step of further including microbial acclimation before step (2) carries out Pressed bio filtration treatment, specially：
The seed sludge of sewage plant will be derived from, bored exposure 24 hours is carried out, stands, abandon supernatant, then add in step (1) through micro- electricity
The pretreated water outlet domestication of reactor 7 days is solved, iron sludge acclimatization is added 10~15 days, after forming reunion shape Biology-iron sludge
Continuous domestication 20~25 days in pressurization organism filter are added it to again.
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| CN109133378A (en) * | 2018-09-30 | 2019-01-04 | 北京东方园林环境股份有限公司 | A kind of composite constructed wetland system |
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| CN111389435A (en) * | 2020-03-17 | 2020-07-10 | 上海化工研究院有限公司 | Iron-carbon micro-electrolysis-Fenton-like catalytic system and application |
| CN111389435B (en) * | 2020-03-17 | 2023-08-29 | 上海化工研究院有限公司 | Iron-carbon micro-electrolysis-Fenton-like catalytic system and application |
| CN113233582A (en) * | 2021-06-25 | 2021-08-10 | 重庆普康生物科技有限公司 | Ecological water treatment process |
| CN114835255A (en) * | 2022-05-24 | 2022-08-02 | 湖南五方环境科技研究院有限公司 | Composite bioreactor based on iron-carbon carrier and preparation and sewage treatment method thereof |
| CN115490321A (en) * | 2022-11-17 | 2022-12-20 | 北京科净源科技股份有限公司 | Fish culture wastewater biological treatment and recycling system |
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